Vapi vs OpenCode vs Gemini CLI vs Retell AI

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Vapi
vs
Competitor 1
OpenCode
Competitor 2
Gemini CLI
Competitor 3
Retell AI
Compare
4 tools · best value per row highlighted
Your tool Vapi
vapi.ai
Vapi is a developer platform for building, testing and deploying voice AI agents that talk to customers on the phone.
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Competitor OpenCode
opencode.ai
OpenCode is an open-source AI coding agent that helps developers write code in the terminal, an IDE or a desktop app.
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Competitor Gemini CLI
github.com
It can query and edit large codebases, generate new apps from PDFs, images, or sketches using multimodal input, and debug problems when you describe them in plain language.
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Competitor Retell AI
retellai.com
Retell AI is a voice agent platform for automating phone calls.
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Traffic estimated monthly website traffic
Monthly visits
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6-month growth
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Bounce rate lower is better
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Pages / visit
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Visit duration
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Traffic sources
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Pricing
Model
Freemium
Free
Free
Paid
Starting price
$29per month
Free
Free
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Free tier
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Free trial
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API access
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Plans
No Success Package FreeCore $29/moPro $999/moPremier Custom
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Free (personal Google account) Free
Pay as you go CustomEnterprise Custom
Capabilities input → output
Input
AudioText
CodeText
CodeDocumentsImagesText
AudioText
Output
AppsAudio
Code
Code
AppsAudio
Skill level
Advanced
Advanced
Advanced
Intermediate
Categories
Business & MarketingVoice & SpeechAI Call CenterAI Customer Service+1 more
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Business & MarketingVoice & SpeechAI Call CenterAI Customer Service+1 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
11
6
6
10
Developer tools
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Coding
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Voice agents
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Call center automation
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Agent creation
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Agents
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Call agents
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Call answering
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Calls
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Customer calls
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Customer support
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Development
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APIs
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Agent testing
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Code analysis
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Customer support automation
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Debugging
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Local AI
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SMS marketing
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Self hosted
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
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no ratings yet
Upvotes
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Saves
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Reviews
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Prompts
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.